big bore

A place to kick back and talk about anything and everything.
User avatar
johnr
Club Member
Posts: 3022
Joined: Sun Oct 24, 2010 9:58 pm
Location: lancashire
Has thanked: 234 times
Been thanked: 342 times

big bore

Post by johnr » Mon Oct 20, 2014 8:13 pm

just out of interest, has anyone ever thought of using kat 1000 pistons to do a big bore on a pop up? quite randomly, ive got one of each piston in my hand. the kat 1000 is a couple of mm bigger in diamiter than the 750, but the height top to bottom of both pistons is the same, the deck height from the gudgeon pin to top surface is identical and the gudgeon pin is the same diamiter. so i reccon a modest overbore on a 750 barrel would get the 1000 pistons in. just thought id mention it.......
My Gallery

KOC 004

User avatar
overbomber
Club Member
Posts: 97
Joined: Tue Feb 15, 2011 10:16 am
Location: Aberdeenshire

Re: big bore

Post by overbomber » Mon Oct 20, 2014 8:58 pm

Did TTS not do an 840 kit years ago? Probably like hens teeth nowadays.

Might be worth risking an old set of barrels on trying it out and sounds like a reasonably feasible idea. Sounds like you think it would be doable.
KOC 396

Nordwest Pilot
S3 Flip-up
ZL400SE Eliminator

User avatar
johnr
Club Member
Posts: 3022
Joined: Sun Oct 24, 2010 9:58 pm
Location: lancashire
Has thanked: 234 times
Been thanked: 342 times

Re: big bore

Post by johnr » Mon Oct 20, 2014 9:09 pm

im more wondering, considering how scarce 1000 pistons are, if you could get a 750 big boore kit into 1000 barrels to replace stock pistons.
My Gallery

KOC 004

dave309

Re: big bore

Post by dave309 » Mon Oct 20, 2014 9:30 pm

mate of mine did it a few years ago cant remember any problems with them

User avatar
harriskat
Posts: 170
Joined: Sat Jun 04, 2011 7:33 pm

Re: big bore

Post by harriskat » Tue Oct 21, 2014 7:43 pm

oooooooooo more power???????

User avatar
johnr
Club Member
Posts: 3022
Joined: Sun Oct 24, 2010 9:58 pm
Location: lancashire
Has thanked: 234 times
Been thanked: 342 times

Re: big bore

Post by johnr » Tue Oct 21, 2014 8:35 pm

i imagine so.
My Gallery

KOC 004

User avatar
Katgeezer
Posts: 909
Joined: Thu Dec 23, 2010 4:02 pm
Location: Orpington,Kent
Has thanked: 6 times
Been thanked: 8 times

Re: big bore

Post by Katgeezer » Wed Oct 22, 2014 4:22 pm

750 big bore kits are very hard to find as well John but I imagine probably slightly more available than 1000 pistons......
I was going to try and drop the liners out of a 750 block and put 1100's in. Not sure if that's possible.
It also just so happens I have a wiseco big bore kit for a 750 on the shelf.........
Maybe I should get some measuring sticks out.
TOO MUCH IS NEVER ENOUGH

THE VULTURE WILL STRIKE

Chris KOC154

Lost count........

User avatar
harriskat
Posts: 170
Joined: Sat Jun 04, 2011 7:33 pm

Re: big bore

Post by harriskat » Wed Oct 22, 2014 7:06 pm

Why do other people have all these shiny bits????!!!!!

bobster

Re: big bore

Post by bobster » Wed Oct 22, 2014 7:09 pm

Because we Kat owners are a bunch of HOARDERS.............some worse than others! ;-)

User avatar
harriskat
Posts: 170
Joined: Sat Jun 04, 2011 7:33 pm

Re: big bore

Post by harriskat » Thu Oct 23, 2014 9:15 am

Very true that. And much older may I add.

Post Reply